Björn Linse wrote:
> To reproduce:
>
> vim -u NONE -i NONE
> :let x = getreg("a",1,1)
> :call setreg("0",x)
>
> gives SIGSEGV on master vim (huge build). "-i NONE" is needed to make sure
> registers are undefined.
>
> it seems like getreg returns a NULL list (I don't know if that is supposed to
> be a thing) for an undefined register, but setreg doesn't handle it.
>
> Maybe the NULL list is meant to behave like a locked empty list, but then
> :call add(x, something)
> should be an error right? Right now it apparently succeeds but len(x) is
> still 0.
Internally a list with a NULL pointer is supposed to be handled like an
empty list. This is efficient, but tricky. Nikolai just sent a patch,
hopefully that helps.
The same thing happens for a string and a dict.
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